Hub-boring machine.



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`HUB BORING MACHINE.

APPLICATION FILED APR. l0, 1912. f 1,045,329, Patented Nov. 26, 1912.

ssHEET`s-sHEBT 1.

C. P. SCHOEN.

HUB BORING MACHINE. APPLIUATION FILED APR.10,1912.

Patented NOV. 26, 1912.

a SHEETS-SHEET 2.

C. P. SCHOEN.

HUB BORING MACHINE.

APPLICATION FILED APR. 1o, 1912.

1,045,329. Patented Nov. 26, 1912.

3 SHEETS-SHEET 3.

wvento'o @Zar-'leaf caen Glpi/Mmmm A 6 proved arrangement ofv drillswith, ini- CHARLES F. SCHOEN. OF ERENCHTOWN,

PATENT FFlC.

NEW JERSEY. AssIGNoR oF ONE-HALFV To WILLIAM J'. WEISS, OF FRENCHTOWN,NEW JERSEY.

HUB-BORING- MACHINE.

v Application filed April 10,

i To all 'whom it mag/concern:

Be it known that l, CIL-muis F. SCHOEN, a citizen of the United States,residing at Frenchtown, inI the county of Hunterdon and State of NewJersey, have invented cerab tain new and useful Improvements in HublBoring Machines, of which the following is a specification.

My invention relates to improvements in hub boring machines.'the'objectof the in--f vention being to provide an improved machine which willsimultaneously bore the spoke receiving sockets in a wheel hub, and willinsure the sockets and will form thfl work.

A further object is to provide an improper positioning of these quicklyand efficiently perproved means for simultaneously turning the drillsand moving them longitudinally, whereby they are forced into the hub andprovide improved means for holding the hub and adjusting said holding`means in accordance with the thickness of the hub.

With these and other objects in view, the invention consists'in certainnovel features of construction and combinations and ar rangements ofparts, as will be more fully hereinafter described and 4pointed out inthe claims.

Inthe accompanying drawings: igure 1,

Specificationv of Letters Patent.

l ets 16 extend.

is a top plan view illustrating' my nnprovements. Fig. 2. 1s a view 1nside elevation.

Fig. '3, is a view in vertical section. Fig. i, f is a itop plan viewwith the top ring'and parts carried thereby removed. Fig. 5. is an 1inverted plan'view of the top ring with the bits removed from thedrills. view on an enlarged scale section, on the line`6-6 of 4 is aview in cross section through one of the i pinions and its shaft. Fig.8, is a detail peri spective view of one of the crank arms 32, l

Fig. 6, is a 2 in lonmtudinal i F. t F. y le. 5. 1g. l,

and Fig. 9, is a fragmentary view in section i on the line 9--9 ofFigjf. y 1, represents a standard integral with a' base 2, and havingits lower end hollow as shown at 3, while the upper portion of the fstandard is provided centrally with a cylinl drical bore 4 for thereception of a shaft l' which is adjustedA vertically therein by meansof a set screw 6. The upper end of the standard 1 is screwthreaded andscrewed into a ring 7. This i ring 7 is provided with a circular seriesof years 30 integral Patented Nov. 26, 1912.

1912. Serial No. 689,721.

radially and upwardly project-ing arms l0,

This ring 11 is adapted to receive thereon an upper ring 12, said ringsbeing secured together by screws 13. provided with a plurality of thescrews dowel pins 14, which insure the 'proper positioningof the ringrelative to each other. The upper ring is formed with a concentriccircular groove 15, and across this groove a plurality of radiallypositioned drill sock- These drill sockets have bearings 17 in bothwalls of the groove 15, and are locked to turn'with beveled pinions 18mounted in the groove 15.

The key 19, 'which its shaft 16, is mounted in a relatively long key way20 in the shaft 16, so t-h t the shaft is allow-ed longitudinal movment, yet always locked to turn with the pinion.

:i spacing washer 21 is provided between the pinion and the outer wallof the groove 15 to sustain the thrust against t-he pinion The inner endof each shaft 16 is provide with a set screw 22 for securing the bit 23in the shaft. On the outer ends of the shaft 16, blocks 24 are provided,and are held between collars 25 so-that the shafts are permitted a freeturning movement in the blocks. Each block is provided at opposite sideswith nions are supported in:recessed bearings 27 in the upper ends ofbifurcated arms 29. The bifurcated arms 29lare keyed to shafts 28. andIthe latter are supportedjin parallel with ring 11.-' Coiled arepositioned on the shafts 29, pressure on sa-id shafts to turn openingsfor sj'u'ingrs 31 and exert a j them 1n a direction to maintain theseveral drills in their outward position ,as shown in the severalfigures of the drawing.

Crank arms 32 'are secured to the shafts 28. These crank arms projectinwardly toward the ring ll, and each crank arm is Vprovided at its freeend with a ring 33 connected to the hooked upper' end 34 of a turnbuckle The crank arms 32 are located in pairs adjacent each other, andthe two turn buckles 35 which connect the arms of a pair, are bothconnected by links 36 with an eye bolt 37.

The arms 2t), shafts 28, and crank arms 32 constitute bell-clunk-leverswhich when moved in one direction cause the drills The upper ring is 13,'and also with openings forv locks the pinion 18 to trunnions 26, andthese truncomprising a standard having a centralA tions as move inwardlyand are normally held by the springs 31 in position to hold the drillsin their outward position.

The links 36 project through slots 38 in@ the standard 1, and the eyebolt is positioned cent-rally in -the'lower hollowr vportion 3 of thestandard, and projects through a foot lever 39 and is secured by a nut40. The foot lever 39 extends through slots 41 in the standard, and ispivotally secured by a pin 42 to a bracket 43 on base 2,. f When thefoot'lever 39 is depressed, all of the drills will vbe simultaneouslyforced inwardly toward the shaft 5 above referred to. On this shaft 5,above the standard 1, and spaced therefrom by 'a washer 44, is a pulley45, and this pulley is adapted to be'driven by a belt from any suitablesource of power.

The pulleyI 45 is connected by integral arms 46 with a circular beveledrack 47, and this rack 47 meshes with all of the pinions 18. The upperend of. shaft 5 is .reduced in diameter as shown at 43. forming ashoulder 49 which is adapted to receive and support the wheel hub to bebored.

1n accordance with the thickness of the, hub, this shaft 5 ispositionedoand is secured at any 'adjustment by means of theset screw 6.When the hub is in position, and the rack 47 is turning so'. as totransmit a rotary Lmotion to all of the drills, the operator places hisfoot upon foot lever 39 and depresses the sa1ne,causng the severaldrills to cut int-o the hub to form the, pockets or recesses for thespokes. These' pockets or recesses will therefore be of uniform depth,and be properly spaced apart.

The operation can be quickly performed, and a great many hubs may bebored in a short'spa'ce 'of "time, as it is simply necessary to lift thefoot ofi of lever 39 to allow thesprings 31 to'withdraw the drills, whena finished hub maybe removed and a new one placed injposition fordrilling.

Various. slightchanges might be made in the general form and arrangementof parts described without departing' from my invention, and hence 1 donot limit myself .to the precise details set forth, but consider myselfat liberty to make such changes and altera@ fairly fall within thespirit and s cope of the appended claims.

Having thus described my invention, what I claim 'as new and desire tosecure by Let- 55A4 ters Patent 1s: 1. A machine of the characterdescribed,

longitudinal bore, a hub supporting shaft adjustably secured in the'bore -of the stand'- ard, a pulley supported on the' upper end of thestandard and mounted to turn on the shaft, radially and upwardlyprojecting arms on theupper face of the pulley, a circuously moving ard,a pulley lar rack iiked to the arms, a ring supported i by the standardand larger than the rack, a circular series of radially positioneddrills supported in the ring, means for simultaneall of said drillslongitudi nally, and pinions'keyed tothe drills and meshing with therack, substantially as de- 1 scribed.

2. A machine of the character described," comprising a standard having acentral longitudinal bore, a adjustably secured in the ,bore of thestandsupported on the uppe'rend of the standard and mounted to turn onthe shaft, radially and upwardly projecting arms'on the upper face ofthe pulley, a circular rack xed to the arms, a ring supported on thestandard, a circular'series of radially positioned drills'suppo'rted onsaid ring, pinhub supporting shaft ions on said drills meshing with therack and keyed to the drills, whereby the latter are permittedlongitudinal movement through the pinions, radially positioned armsfixed to the standard and supporting said ring, bellcrank-levefrssupported on said arms and engaging the drills, afoot lever projectingthrough the standard, and connecting devices extending through 'openingsin thestandard and connecting the foot lever with the respectivebell-crank-levers whereby vthe depression of the foot lever causes thedrills to be moved inwardly simultaneously, substantially as described.`

3. A machine of the character described, comprising a. standard having acentral longitudinal bore, a hub supporting shaft adjustably secured inthe bore ofthe standard, apulley supported on the upper end' of thestandard, and mounted to turn on the shaft, radially and upwardly"projecting arms on the upper face of the pulley', a circular rackvfixed to the arms, a ring, a circular series of radially positioneddrillssupported on said ring, pinions on said drills meshing with therack and keyed to the drills, whereby the' latter' are permittedlongitudinal movement through the pinions, radially positioned arms`fixed to the standard and supporting said ring, bell-crank-leverssupported on said arms and engaging the drills, means on the standardsfor simultaneously operating all of.said bell-crank levers, and springscoiled about the pivotal points of said bell-crank-levers exertingpressure on the saine to normally hold the drills in their outwardposition, substantially as described.

In testimony whereof I have signed my name to this speclfication .inthepresence .of

. two subscribing. witnesses.

CHARLES F. .SCHOEN Vitnesses:

WILLIAM C. QUICK, JAoo M. STORM.

. M opies of thi's patent may be obtained for nve cents each, byaddressing the j Gommisslcasr 'or' atents, Washington,- D. IC.

